Add ATC Command Center v1 with light UI theme.

Agent hub dashboard, FastAPI backend, and Docker stack for VM 304 MCP.

Co-authored-by: Cursor <cursoragent@cursor.com>

README.md

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+# ATC Command Center
+
+Autonomous agent hub for the Dell ATC lab — Ops Floor UI, FastAPI backend, 5 operator agents.
+
+## Quick start
+
+```bash
+docker compose up -d --build
+```
+
+Open: **http://atc-mcp.dell-atc.lan/** (or `http://10.0.21.33/`)
+
+## Stack
+
+- **ui** — React dashboard + operator sprites (cap + headset)
+- **api** — FastAPI (status, feed, prompts, WebSocket)
+- **redis** — live event bus
+- **caddy** — reverse proxy (:80)
+
+## VM 304 (MCP)
+
+- Host: `atc-mcp.dell-atc.lan` → DHCP on VLAN 20 (`br_20`)
+- Proxmox VMID **304** on **atc-gpu**
+- SSH: `root` / `Dell2026!`
+
+## Gitea
+
+`http://atc-mgt01.dell-atc.lan:3001/mo/atc-agents`